Combination pump-rod guide, coupling, and valve cage



' Feb. 5, 192.4. 1,482,842

J. G. DORWARD COMBINATION PUMP ROD GUIDEQCOUPLING, AND VALVE CAGE FiledMarch 9. 1922 3 Sheets-Sheet 1 lbs/71757 JOHN q. poem/ea I w n} My 1.QAYIEI'IIE 5 Feb. 5, 1924;

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" J. ca. DORWARD COMBINATION PUMP ROD GUIDE, COUPLING, AND VALVE CAGEFiled March 9. 1922 3 Sheets-Sheet 2 J. a. DORWARD COMBINATION PUMPK656011221, COUPLING, AND VALVE CAGE Feb. 5 1924.

Filed March 9. 1922 3 Sheets-Sheet 3 5 00555 25 /0/1/7 m 7; WV

AYZZIIZZWS Patented Feb. 5, 1924.

ETE seas Jo'rrn's. foo'awnnn, or sen raancrsco, CALIFORNIA.

COMBINATION ruler-non G-UI'DE, COUPLING, AND VALVE-ones.

Applicationfile'd CEIaIOh Q, 1922. Serial No. 542,345.

1 all whom it may concern:

Be it known that 1, JOHN G. DORWARD, a citizen of the United States,residing at the city'and county of San Francisco and State ofCalifornia, have invented new and useful lmprovements in CombinationPump-Rod Guides, Couplings, and Valve Cages, of which the following is aspecification;

This invention relates to a pump, and

especially to a combination pump rod guide,

1 coupling and valve cage for deep well pumps of the reciprocatingplunger type.

Deep Well pumps are as a'rule not only submerged, but in practicallyevery case positioned a considerable distance below the surface of theWell; in some instance several hundred feet. In view thereof it canreadily be appreciated that accessibility under the best of conditionspresents a :diflicult problem, hence requiring the best of work manshipand material when the working parts, such as valve's, plungers, guides,etc., are considered, and further a-s'tructure which is simple,substantial and efficient in operation. A great Variety of valves isemployed in pumps of this character, but practically all areobjectionable either from a point of accessibility or otherwise. In manycases the valves do not seat or wear properly and sometimes they do notseat at all. In such instances rapid Wear takes place and considerablelosses in pump capacity and general efiiciency result.

Th main object of the present invention is to generally improve andsimplify pumps of this character; to reduce the number of partsemployed; to insure proper alignment of the reciprocating parts andproper functioning of the valves; further to provide a single unit whichwill serve three functions:

first, that of a valve cage and guide; sec-- ondly, a pump rod and aplunger rod coupling; and third, that of a cross head or guide for thepump rods and plunger rod.

Another object of the invention is to provide a combination pump rodguide, coupling and valve cage, which is simple and substantial inconstruction and accessible for inspection, repair, etc.

Further objects will hereinafter appear.

The invention consists of the parts and the construction, combinationand arrangement of parts as hereinafter more fully described andclaimed,having reference to the accompanying drawings, in which- Fig. 1is a central, vertical, longitudinal section of a deep well pump showingthe "application of the invention.

Fig. 2 is .a sideelevation of the pump and guide, coupling and valvecage.

Fig. 3 is a central, vertical,"longitudinal section of thesa-me.

. Referring to the drawings in detail, and particularly to Fig. 1, Aindicates the barrel or cylinder of a deep well pump, 2 the piston orplunger, 3 the plunger rod, 4the foot valve,and'5 and 6 a pairof checkvalves, the function of Which will hereinafter be *de scribed. That'ortion of the pump which embodies the su ject matter of the presentinvention is generally indicated at B @"and will hereinafter be termed a"combination pump rod guide, coupling and valve cage. This title israther descriptive as the member B serves three functions: -first, thatof'a pump rod and plunger rod guide, secondly, that of a valve cage andguide, and third, that of a coupling between the pump rods and the pluner rod. The member B :is particularly illustrated in Figs. 2 and Itconsists of a casting, the upper end of which is internally threaded asat 7 to receive the pump rod 8. The lower end is also internallythreadedas at 9 to receive a coupling 10 which serves three functionsfirst, that of a valve seat; secondly, that of a plunger rod coupling;and third, that of a guide forthe valve. The lower end of the coupling10 is internally th'readed'as at 11 to receive the plunger rod 3, and asthis rod is hollow or tubular as-shown, it will be seen that it maycooperate with the coupling 10 to form a guide for the valve generallyindicated at 12. This valve is of the disk type and seats on the upperend of the coupling 10. Forming an extension of the valve 12 is a rod13, and secured on the lower'end thereof is a guide 14. This guide-formsa sl iding fit withrelation tothe interior surface of the rod 3, and asthe guide 14 iss-pider shaped, 'free flow of water will be permitted.

The member B so far described therefore serves not oii'ly'as a couplingfor the rods 8 and 3, but it also serves as a cage for the valve 12 andas a guide therefor. It *still serves another function, to-wit, that ofa cross head or guide for the rods 8 and 3, and as an upper guide forthe valve. This is "accomplished by providing four or more radiatingarms 15, on the outer ends of which are formed shoes 16. Theseshoesen'gage the interior surface of the well casing C and as such forma cross head or guide for the rods referred to, thereby maintainingproper alignment between the rods and the piston or plunger, and as theinner ends of the arms terminate at a point adjacent valve 12 an upperguide is formed therefor. The general operation of the pump is asfollows:

During the upward movement of the piston 2, water will enter through thefoot valve at and fill the lower chamber of the barrel or cylinder A.During the downward movement the foot valve will close and the waterwill be forced upwardly through. the hollow plunger rod 3. It will thusraise the valve 12 from its seat and the water will freely dischargebetween the radiating arms 15, directly into the interior of the wellcasing C by which it. is conveyed to the top of the well and dischargedin any suitable manner. During the downward stroke of the piston orplunger 2, water will also enter the up per chamber of the barrelthrough ports such as indicated at 17. The valve 6 will be raiser fromits seat during this stroke of the plunger and the water will thus passdownwardly into the upper chamber through by-pass passages indicated at18. During the next upward stroke of the plunger, the water previouslyadmitted will reverse its flow through the passages 18 and valve 6 willclose. The upper valve 5 will then be raised from its seat by the upwardpressure of the water which will freely discharge into the casing. Inother words valves 5 and 6 cooperate with the upper chamber formed inthe barrel, while the foot valve & and the check valve 12 carried in theupper end of the plunger rod cooperate with the lower chamber formed inthe cylinder. A double acting deep well reciprocating pump is in thismanner obtained and, practically speaking, a continuous flow ordischarge is secured in the casing C. Perfect alignment of thereciprocating parts with relation to the casing and the pump barrelcarried thereby is maintained by the arms 15 and the shoes 16. A. guideis rormed for the upper valve '12, which insures proper seating andfunctioning thereof and a coupling between the rods 8 and 3 issimultaneously formed, thus niaterially reducing the number of partsemployed and simultaneously insuring full pump capacity and efficiency.

By referring to Figs. 2 and 3 in particular, it will be noted that theupper portion of the casting is cone shaped'as indicated at 18 and thatthe lower end thereof terminates in a flat disk like face 17; further,that the diameter presented by this face is considerably less than thatof the valve 12. This is of considerable importance as it allows thewater to strike the outer annular edge of the valve and causecomparatively rapid seating thereof during the upward stroke thuseliminating the use of springs and like mechanisms now commonly employedto insure seating of the valve.

Another important feature of the present invention is the provision ofmeans for preventing hammering of the valve, particu larly during theupward movement thereof. This is accomplished by forming a conicalshaped recess 19 in the upper face of the valve and a complementary orcone shaped projection 20 on the lower end of the cone 18. The conicalshaped depression or recess in the top of the valve 12 serves as a trapor water receiving pocket, and therefore cushions and stops the valvefrom hannnering. The conical projection 20 is slightly smaller than thedepression. in the valve 12 and enters the said depression durin thelift or upward .lllOVGlllGIlt of the valve. The water in the depressionis thus displaced and forced between the faces formed between the lowerend of the cone and the upper surface of the valve, thereby forming acushion which positively prevents metal contact and consequenthammering.

While certain features of the present invention are more or lessspecifically illustrated, I wish it understood that various changes inform and proportion may be resorted to within the scope of the appendedclaims, similarly that the materials and finish of the several partsemployed may be such as the experience and judgment of the manufacturermay dictate or varying uses may demand.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. In a pump of the character described thecombination with the discharge casing, a hollow pump rod and a hollowplunger rod, of a coupling member connecting the pump rod and theplunger rod and formed to prevent fluid entering the pump rod, a valveinterior of said coupling. and means on the coupling forming a guide forthe valve nd a guide for the rods with relation to the discharge casingand permitting How of fluid through the coupling member for passagebetween the casing and the pump rod.

2. In a pump of the character described the combination with thedischarge casing, a hollow pump rod and a hollow plungerrod, of acoupling member connecting the pump rod and the plunger rod and having awall across the lower end of the pump rod to prevent flow of fluid intothe pump rod, a valve interior of said coupling, a plurality of radiallydisposed arms on the coupling forming a guide for the valve, and shoeson the outer ends of the arms engageable with the interior surface ofthe discharge casing and forming a guide for the rods, a coupling memberhaving fluid outlet passages between said arms.

3. In a pump of the character described the combination with thedischarge casing, a hollow pump rod and a hollow plunger rod, of acoupling member connecting the pump rod and the plunger rod and closingthe lower end of the pump rod to exclude fluid therefrom, a valve headconfined wholly within the said coupling, a phu ality of radiallydisposed arms on the coupling having their inner ends arranged toform aguide for the valve, shoes on the outer ends of the arms engageable withthe interior surface of the discharge casing and forming a guide for therods, av stemon the valve extending downwardly into the hollow plungerrod, and a spider on the end of said stem forming a second guide for thevalve.

4. A combination pump rod guide, coupling and valve cage comprisingupper and lower interspaced coupling members, a plurality of radiallydisposed arms connecting the same, a guide shoe on the outer end of eacharm, a removable coupling member carried by the lower coupling member, avalve seat formed on the upper end thereof, a disk valve supported onthe seat and having its upper end guided by the inner ends of theradiating arms, the pump rod being hollow and the upper coupling memberhaving a wall closing the lower end of the hollow pump rod to excludewater therefrom, one of the coupling members having fluid outletopenings therein, a tube carried by the removable coupling member, astem on the valve projecting downwardly into said tube, and a spider onthe lower end of the stem engageable with the interior surface of thetube and forming a lower guide for the valve.

5. In a pump of the character described the combination with thedischarge casing, the pump rod and the hollow plunger rod, of a couplingmember connecting the pump rod and the plunger rod, a valve interior ofsaid coupling, means on the coupling forming a guide for the valve and aguide for the rods with relation to the discharge casing, and means fordirecting .water against the upper surface of the valve to insureseating thereof.

6. In a pump ofthe character described the combination with thedischarge casing, the pump rod and the hollow plunger rod, of a couplingmember connecting the pump rod and the plunger rod, a valve interior ofsaid coupling, means on the coupling forming a guide for the valve and aguide for the rods with relation to the discharge casing, and a coneshaped stop member limiting upward movement of the valve, the conehaving a diameter smaller than the upper face of the valve to directwater against the said surface and to insure seating of the valve.

7. In a pump of the character described the combination with thedischarge casing,

the pump rod and the hollow plunger rod, of a coupling member connectingthe pump rod and the plunger rod, a valve interior of said coupling,means on the coupling forming a guide for the valve and a guide of saidcoupling, means on the coupling forming a guide for the valve and aguide for the rods with relation to the discharge casing, the valvehaving a recess provided in its upper face and forming a water trap, thecoupling having a complementary projection adapted to enter said recessduring the lift of the valve and displace the water contained in therecess and thereby cushion the movement of the valve.

9. In a pump of the character described, the combination with thedischarge casing, the hollow pump rod and the hollow plunger rod, of acoupling member including a plurality of radially disposed arms projecting from the coupling member and engaging the walls of the dischargecasing and having a wall disposed across the lower end of the hollowpump rod to exclude fluid from the latter, a removable coupling membercarried by the aforesaid coupling memher and having a valve seat at itsupper end disposed within the first mentioned coupling member, a diskvalve supported on said valve seat in alignment with and guided by theinner ends of said radiating arms, and a tube carried by the removablecoupling member.

10. In a pump of the character described, the combination with thedischarge casing, the hollow pump rod and the hollow plunger rod, of acoupling member including a plurality of radially disposed armsprojecting from the coupling member and en gaging the walls of thedischarge casing said coupling member having a wall arranged to closethe lower end of the hollow pump rod to exclude fluid therefrom, aremovable coupling member carried by the aforesaid coupling member andhaving a valve seat at its upper end disposed within the first mentionedcoupling member, a disk valve supported on said valve seatand inhorizontal alignment with and guided by the inner ends of said radiatingarms, a

tube carried by the removable couplingmember, a stem on the valveprojecting downwardly into sa1d tube and a spider on the lower end ofthe stem engageable with the interior surface of the tube and forming alower guide for the valve.

11. In a pump of the character described, the combination with thedischarge casing, the pump and the hollow plunger rod, of a couplingmember connecting the pump rod and the plunger rod, and having spacedradiating arms engageable with the interior surface of the dischargecasing whereby to effect guidance of the pump rod and the hollow rod andthe coupling member, a valve disposed within said coupling member, andmeans operative between the valve and the coupling member to effect ahydraulic cushioning of the valve on the upward movement or" the same.

12. In a pump of the character described, a discharge casing, a hollowpump rod, a hollow plunger rod, a valve cage comprising upper and lowercoupling members, the upper coupling member having a. plurality 0tradially disposed arms, and also having a wall extending across andclosing the low er end of the hollow pump rod, the lower coupling memberfitting within the inner ends of the arms and supported thereby and atits inner end forming a valve seat, a valve supported on the seat andguided by the inner ends of said arms, shoes on the outer ends of thearms engageable with the interior surface of the discharge casing toguide the cage in the casing, the upper coupling member being tormed toprovide passage of fluid between the arms into the discharge casing, anda tube carried by the lower coupling member.

JOHN G. DORWARD.

